What does it take to get American cheese into a European cheese shop? And will anybody buy it if you do? Raymond Hook, a New York City-based specialty-food broker, is close to someanswers. Working with partners, Hook is attempting to build a global audience for cheeses from Oregon’s Rogue Creamery, Virginia’s Meadow Creek Dairy and Georgia’s Sweet Grass Dairy, among others. The export learning curve has left a few bruises, but Hook is an optimist. Today: London. Tomorrow: the world.